Power Hum

snap, crackle and pop
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CLARK67
United States of America
Posts: 1
Joined: 15 Feb 2019 19:12

Power Hum

Post by CLARK67 » 15 Feb 2019 20:12

I was getting a great deal of AC power hum. Tried revising the power supply to my new Pyle preamp and that did not help even though I used a power supply that is considerably more valuable than that amp. moved the preamp directly behind the turntable to shorten the low power lines, no change. Found that touching the cartridge made the level of the hum change. Finally found that the thumb screw that holds the cartage assembly to the arm was loose. Go figure! clean sound now.

dysmike
senior member
senior member
Germany
Posts: 363
Joined: 21 Jul 2018 01:20

Re: Power Hum

Post by dysmike » 15 Feb 2019 20:23

So, you essentially had a broken ground path.

lenjack
long player
long player
Posts: 1363
Joined: 23 Jun 2017 02:11
Location: Liverpool,PA

Re: Power Hum

Post by lenjack » 15 Feb 2019 21:57

That's happened to most of us who have been at this long enough, at some time or other, whether or not we care to admit it. :oops: :wink: #-o

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